[Rasch] Conquest question

Bayram YILMAZ bayramyilmaz at gmail.com
Mon Mar 12 03:38:38 EST 2012


Dear all,

I need your help with a Conquest syntax. I have never used that software
before but right now only a trial version of  Conquest is available.
There are 15 questions in the data set; some items are scored dichotomously
and others polytomously. I am trying to figure out the person statistics
and give them scores on the test, but I could not do that so far.  Below is
the syntax file I wrote. Could anyone direct me regarding how to do that,
please?

datafile deneme2.dat;
format responses 1-15;
codes 2,1,0;
recode (b,c) (1,0) !item(1);
recode (a,b,c) (2,1,0) !item(2);
recode (b,c) (1,0) !item(3);
recode (b,c) (1,0) !item(4);
recode (b,c) (1,0) !item(5);
recode (a,b,c) (2,1,0) !item(6);
recode (a,b,c) (2,1,0) !item(7);
recode (b,c) (1,0) !item(8);
recode (b,c) (1,0) !item(9);
recode (a,b,c) (2,1,0) !item(10);
recode (b,c) (1,0) !item(11);
recode (a,b,c) (2,1,0) !item(12);
recode (a,b,c) (2,1,0) !item(13);
recode (a,b,c) (2,1,0) !item(14);
recode (a,b,c) (2,1,0) !item(15);
model item + item*step;
estimate;
show !estimates=latent >> deneme2.shw;
itanal >> deneme2.itn;
plot icc;
plot mcc ! legend=yes;
------

Thanks,

Bayram
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